Does anyone know the thickness of both the Spoon 1piece headgasket and 2piece headgasket?
I'm installing Endyn (Wiseco) NA high CR Rollerwave pistons in my B18C1 and I need a headgasket to go with them. I don't want my compression to be rediculously high since it's my daily driver and I want to be able to run on regular pump gas ie. 94octane. I'm also running Jun Stage 3 cams and I don't want to have any clearance issues. Please post your input on any headgasket.

 

1 ply bumps up CR approx. 0.4

 

It sounds like you're already almost at the limits as far as piston to valve clearance is concerned. The combination of Weisco Pistons (12.15:1 compression I assume), Jun Stage 3's (high lift and duration), a thinner head gasket (be Mugen or Spoon), and the GSR head will yield a very high compression ratio. I wouldn't be surprised if you had to go with a stock head gasket just to avoid piston to valve clearance issues.

With that set-up, I would definitely recommend the exclusive use of Sunoco Ultra 94. How do I know? Because I have those Weisco pistons in my Type-R and They need high octane gas.

Good luck with your project. It sounds like it should be a fast set-up.

 

stick with the stock headgasket. one thing that larry at endyn will do is custom cut your valve relifes for more aggresive cams i.e. jun 3's.

 

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Thanks for the info guys. Do you know the how thick the stock head gasket is? Is there any benefit from an aftermarket headgasket besides raising or lowering your compression?